4.6 Hybrid and Multi-Cloud

Defining Hybrid Cloud and Multi-Cloud

The terms hybrid cloud and multi-cloud describe two related but distinct deployment strategies.

• Hybrid cloud combines on-premises infrastructure (or a private cloud) with one or more public clouds, with workload and data movement between them. A common pattern is keeping sensitive systems on-premises while running newer cloud-native workloads in the public cloud.
• Multi-cloud is the deliberate use of two or more public clouds (for example, Google Cloud plus AWS plus Azure) for different workloads or for the same workload spread across providers.

These strategies are not mutually exclusive. Many large organizations run a hybrid and multi-cloud environment at the same time.

Hybrid vs. Multi-Cloud Comparison

Business Reasons for Choosing Hybrid or Multi-Cloud

Organizations adopt hybrid or multi-cloud strategies for concrete business reasons, not just technology preference.

Regulatory and Data Sovereignty Constraints

Some data must remain on-premises or within a specific geography due to regulation (healthcare, finance, government, defense). Hybrid cloud lets an organization keep regulated workloads and data on-premises or in a specific cloud region, while running less-sensitive workloads in the public cloud. Multi-cloud lets an organization place workloads in clouds that meet the residency requirements of different jurisdictions.

Avoiding Vendor Lock-In

Relying on a single cloud provider for everything creates strategic risk: pricing power shifts to the vendor, and migration away becomes expensive. Multi-cloud keeps providers honest, gives negotiating leverage, and lets the organization move workloads if a provider changes terms or falls behind.

Leveraging Best-of-Breed Services

Different clouds lead in different areas. One cloud may have the strongest AI/ML services, another the best content delivery, another the deepest Windows and Office integration. Multi-cloud lets an organization pick the best service for each workload rather than compromising on a single provider.

Incremental Migration

Few organizations can move everything to the cloud at once. A hybrid approach lets teams migrate in waves, keeping systems on-premises until their cloud replacement is ready, and decommissioning the legacy system only after validation.

Mergers and Acquisitions (M&A)

Mergers and acquisitions (M&A) frequently produce mixed estates. The acquired company may already run on AWS while the acquirer runs on Google Cloud. Multi-cloud lets the combined organization keep both estates running and integrate them over time rather than forcing an immediate, risky migration.

Latency and Edge Needs

Some workloads must run close to users or to physical equipment. Edge locations, factory floors, retail stores, and telecom sites often require a hybrid model where compute sits at the edge and heavier processing happens in the public cloud.

The Business Value of Anthos

Running workloads across heterogeneous environments creates a serious operational problem: each environment has its own tooling, policies, observability, and deployment model. Managing them separately is expensive and error-prone.

Anthos is Google Cloud's answer. Anthos is a hybrid and multi-cloud platform that provides a single control plane — a single pane of glass — for managing Kubernetes workloads across Google Cloud, on-premises (Anthos on-prem), Amazon Web Services (AWS), and Microsoft Azure.

What Anthos Provides

• Consistent operations — The same Kubernetes API, the same deployment model, and the same observability stack across every environment. Teams learn one set of tooling and use it everywhere.
• Unified policy enforcement — Security and compliance policies (who can deploy what, with which configurations) are defined once and enforced consistently across all clusters in all environments.
• Workload portability — Because workloads are packaged as containers and orchestrated by Kubernetes, they can be moved between Google Cloud, on-premises, AWS, and Azure without rewriting.
• Reduced operational complexity — Instead of separate teams and tooling per environment, one team can manage all Kubernetes clusters centrally.
• Centralized visibility — A single dashboard shows workloads, health, and policy status across every environment.

Anthos Components

• Anthos GKE — managed Kubernetes on Google Cloud and on-premises (GKE On-Prem).
• Anthos attached clusters — register and manage existing Kubernetes clusters on AWS and Azure from the Anthos control plane.
• Anthos Config Management — enforce configuration and policy as code across all clusters.
• Anthos Service Mesh — manage service-to-service communication, security, and observability consistently across environments.
• Migrate to Anthos — lift and reshape VM-based workloads into containers that run on Anthos-managed clusters.

Anthos Use Cases

When Anthos Is the Right Choice

Anthos is the right choice when an organization needs to run Kubernetes workloads across more than one environment and wants a consistent operational model across all of them. For a single-environment deployment, plain GKE on Google Cloud is simpler and sufficient. The business value of Anthos grows with the number and diversity of environments being managed.

Naming change for the updated exam - Anthos is now GKE Enterprise. Google rebranded Anthos as GKE Enterprise, the enterprise tier of Google Kubernetes Engine. The capability is the same one described above - one control plane, consistent policy, and workload portability across Google Cloud, on-premises, AWS, and Azure - but the exam guide effective August 12, 2026 never says "Anthos." Instead it asks you to recognise the Google Cloud products supported on hybrid and multicloud environments, and names five:

The pattern behind the list is the business message Google wants you to take away: portability is delivered per layer - Kubernetes for compute, Omni variants for data, Looker for analytics - so an organization can pursue a hybrid or multicloud strategy without re-platforming each layer separately. If you are sitting the current exam through August 11, answer "Anthos"; from August 12, answer "GKE Enterprise."